Self-reported questionnaire survey for clinical nurses; no drug, operation or other clinical intervention is implemented in this research.

This study primarily uses the following scales to assess health outcomes among nurses:

1. Morningness-Eveningness Questionnaire, 5-item version; scores 4-25, with higher scores indicating greater morning-type chronotype.
2. Work-Family Balance Scale; scores 14-70, with higher scores indicating greater levels of work-family conflict or facilitation.
3. Practice Environment Scale of the Nursing Work Index; scores 31-124, with higher scores indicating a more supportive work environment.
4. Perceived Stress Scale; scores 0-40, with higher scores indicating greater perceived stress.
5. Maslach Burnout Inventory-Human Services Survey; scores 0-132, with higher scores indicating greater burnout severity.
6. Nurses' Perceived Professional Benefits Scale; scores 33-165, with higher scores indicating higher perceived professional benefits.
7. Yale-Brown Obsessive Compulsive Scale; scores 0-40, with higher scores indicating greater symptom severity.